The situation for the United States of America in WW2 was far more desperate than initially expected. Supplied with Soviet oil, rubber, chemicals and minerals, the Japanese Empire was able to supply their army, navy and industrial heartlands with little issue. However, it could never match American shipbuilding capabilities. Because of this, in early 1942 a special wartime commission was assembled to design a series of battleship-carrier hybrids. Two ships of this type were commissioned in October and November of 1943, respectively; USS Union and USS Tyrannicide. Though funding for further battlecarriers was denied, the Union-class proved itself more than formidable. During the Battle of the Philippine Sea, the twin battlecarriers of the United States Navy proved to be a decisive asset, spearheading through the Japanese line of battle. Both ships were turned to the USN's reserves post-war. However, the details of its design were stolen by an Oceanykan-American engineer who worked in the original project, and the ship was reproduced at least twice during the 1950s by Oceanykan shipyards.
As a battlecarrier, the Union-class is the king of the seas. It can independently ravage an enemy strike group, unleashing long-range cannon fire and airpower over them. However, it is vulnerable to submarines and small, agile, torpedo-armed ships. Furthermore, the rise of AShMs has left anything larger than a cruiser in a precarious position. One massive advantage of the Union-class is that its avant-garde design left it with extremely modern fire control, electronic and radar systems, competitive even in the mid-1960s.